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chronological means: sorting the articles by the date of publishing? (Articles also have several dates stored in the database; besides publishing date there's also "date_submitted", "last_modified", "date_status_modified" and a date when the files belonging to an article have been uploaded or modified.)

Actually, there is an internal function in OJS that retrieves all published articles of a journal in chronological order, using the publication date. The function can sort in ascending and descending order. It is located in /classes/article/PublishedArticleDAO.inc.php - the function's called "getPublishedArticlesByJournalId".

If you want to display the chronological list of articles on the home page of a journal, you could call this function from /pages/index/IndexHandler.inc.php, in the part starting in line 41 with "if($journal)".

With those lines, your template /templates/index/journal.tpl will know about the articles in chronological order. You can use the variable $publishedArticles to iterate over them and prepare them for display.

I haven't tested this suggestion though, so there might be some caveats that I haven't thought through. You might also want to prepare the $publishedArticles with a VirtualArrayIterator or use some other way to limit the output, if the article list would get too long. However, maybe with those ideas you'll find a way towards the solution you're looking for.

// get all published articles, put them into $publishedArticles array and assign it to template responsible for homepage rendering $publishedArticleDao =& DAORegistry::getDAO('PublishedArticleDAO');$publishedArticles =& $publishedArticleDao->getPublishedArticlesByJournalId($journal->getId());$publishedArticles =& $publishedArticles->toArray(); $templateMgr->assign('publishedArticles', $publishedArticles);

As far as I understand it, this code gives me an array with n PublishedArticle objects representing all articles ever published in the indicated journal which is furthermore assigned to the journal homepage template file for further processing there.

Here the code for the template file of the journal homepage /templates/index/journal.tpl